Usetulvo Audio Editor & Cutter

Usetulvo Audio puts 10 audio tools in one app, and every one of them runs on your phone. Your recordings are never uploaded and you don't need an account. Free, with no usage limits, no watermark and no ads.

AT A GLANCE
• Start a recording in one tap and see your recent sounds on the start screen
• Check a recording's length, loudness, background noise, hum and clipping, then clean or balance it in one tap

CUT AND JOIN
• Trim an MP3, WAV or M4A on the waveform, with fade in and fade out
• Merge 500 or more audio files into one (up to 1000 on a 4 GB phone), with an optional crossfade
• About 50 minutes as WAV or more than 6 hours as MP3; each file up to 200 MB and 20 minutes
• Cut out long pauses, or only the silent start and end

RECORD
• Record your voice with pause and resume, save as MP3, WAV or Opus

CONVERT
• Convert to MP3, WAV, M4A (AAC) or Opus, change the sample rate, normalize the volume
• Take the sound out of a video as MP3 or WAV

IMPROVE
• Remove background noise from voice recordings
• Speed up or slow down from 0.25× to 4× and keep the pitch
• Play audio backwards

SPEECH TO TEXT
• Turn recordings into text or SRT/VTT subtitles in 45 languages. The speech model is downloaded once on first use; your audio stays on the phone.

SAVE AND SHARE
Save results to your phone, keep them in My files, or share them to any app in one tap.

NO ADS, NO LIMITS
Every tool is free to use, with no ads, no sign-up and no daily limits.

Available in 21 languages. The same tools are also on usetulvo.com.

GOOD FOR
• Cutting a song into a ringtone or an alarm sound
• Trimming a voice memo, a podcast or an interview before you send it
• Joining several voice notes or tracks into one MP3
• Getting the audio out of a video you filmed
• Cleaning up hiss and hum in a lecture or meeting recording
• Writing out an interview or making subtitles for a video
• Slowing down a song to learn it on an instrument

Developed by Lunar Code Tech, Netherlands.